Answer: The Eisenhower Doctrine promised military support as well as economic aid to prevent communism from spreading to the Middle East.
Detail:
The Eisenhower Doctrine was proclaimed by President Eisenhower in 1957. Eisenhower pledged to provide economic or also military aid, as needed, to any Middle Eastern country needing help in resisting communist aggression. This was in response to Soviet and other communist support to Egypt, and as a warning to the USSR in regard to the Suez Crisis of 1956.
